Q93.3 — Deletion of short arm of chromosome 4
Is Q93.3 billable?
Yes — Q93.3 is billable for FY2027. Q93.3 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Q93.3 may be submitted for encounters from October 1, 2026 through September 30, 2027.
Q93.3 at a glance
| Code | Q93.3 |
|---|---|
| Description | Deletion of short arm of chromosome 4 |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does Q93.3 group to?
Q93.3 sits in MDC 19 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 884Organic Disturbances and Intellectual Disabilitymedical
As a secondary diagnosis, Q93.3 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is Q93.3 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Q93.3. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Wolff-Hirschorn syndrome
- Syndrome › chromosome 4 short arm deletion
- Deletion › chromosome › short arm › 4 (s)
Inclusion terms
Alternative wording in documentation that is classified to Q93.3.
- Wolff-Hirschorn syndrome
Excludes2 — not included here — inherited from Chapter 17
The conditions below are not part of Q93.3, but a patient may have both at the same time. When documentation supports it, Q93.3 and the excluded code may both be reported.
- inborn errors of metabolism (E70-E88)
Excludes2 — not included here — inherited from Q90-Q99
The conditions below are not part of Q93.3, but a patient may have both at the same time. When documentation supports it, Q93.3 and the excluded code may both be reported.
- mitochondrial metabolic disorders (E88.4-)
How long has Q93.3 existed?
Q93.3 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
What other codes are in the Q93 family? (8)
- Q93.0Whole chromosome monosomy, nonmosaicism (meiotic nondisjunction)
- Q93.1Whole chromosome monosomy, mosaicism (mitotic nondisjunction)
- Q93.2Chromosome replaced with ring, dicentric or isochromosome
- Q93.4Deletion of short arm of chromosome 5
- Q93.5Other deletions of part of a chromosomenot billable
- Q93.7Deletions with other complex rearrangements
- Q93.8Other deletions from the autosomesnot billable
- Q93.9Deletion from autosomes, unspecified